package com.zhubayi.springcloud.filter;

import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.annotation.Order;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

/**
 * @author zhubayi
 * 全局过滤器
 */
@Component
@Order(0)
@Slf4j
public class MyLogGateWayFilter implements GlobalFilter {

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        log.info("**********进入过滤器*********");
        String username = exchange.getRequest().getQueryParams().getFirst("username");
        if(username==null){
            log.info("用户名为空，非法用户");
            exchange.getResponse().setStatusCode(HttpStatus.NO_CONTENT);
            return exchange.getResponse().setComplete();
        }
        return chain.filter(exchange);
    }
}
